diff --git a/src/neuroconv/datainterfaces/ecephys/blackrock/blackrockdatainterface.py b/src/neuroconv/datainterfaces/ecephys/blackrock/blackrockdatainterface.py
index 7e6e499d1..bc9f9b51b 100644
--- a/src/neuroconv/datainterfaces/ecephys/blackrock/blackrockdatainterface.py
+++ b/src/neuroconv/datainterfaces/ecephys/blackrock/blackrockdatainterface.py
@@ -98,8 +98,8 @@ def __init__(self, file_path: FilePath, sampling_frequency: Optional[float] = No
             The file path to the ``.nev`` data
         sampling_frequency: float, optional
             The sampling frequency for the sorting extractor. When the signal data is available (.ncs) those files will be
-        used to extract the frequency automatically. Otherwise, the sampling frequency needs to be specified for
-        this extractor to be initialized.
+            used to extract the frequency automatically. Otherwise, the sampling frequency needs to be specified for
+            this extractor to be initialized.
         verbose : bool, default: True
             Enables verbosity
         """
diff --git a/tests/test_on_data/ecephys/test_sorting_interfaces.py b/tests/test_on_data/ecephys/test_sorting_interfaces.py
index 1232cc190..054f08391 100644
--- a/tests/test_on_data/ecephys/test_sorting_interfaces.py
+++ b/tests/test_on_data/ecephys/test_sorting_interfaces.py
@@ -27,7 +27,7 @@
 
 class TestBlackrockSortingInterface(SortingExtractorInterfaceTestMixin):
     data_interface_cls = BlackrockSortingInterface
-    interface_kwargs = dict(file_path=str(DATA_PATH / "blackrock" / "FileSpec2.3001.nev"))
+    interface_kwargs = dict(file_path=str(DATA_PATH / "blackrock" / "FileSpec2.3001.nev"), sampling_frequency=30_000.0)
 
     associated_recording_cls = BlackrockRecordingInterface
     associated_recording_kwargs = dict(file_path=str(DATA_PATH / "blackrock" / "FileSpec2.3001.ns5"))